buddhism/uni_modules/lime-echart/components/l-echart/utils.js

// #ifndef APP-NVUE
// 计算版本
export function compareVersion(v1, v2) {
  v1 = v1.split('.')
  v2 = v2.split('.')
  const len = Math.max(v1.length, v2.length)
  while (v1.length < len) {
    v1.push('0')
  }
  while (v2.length < len) {
    v2.push('0')
  }
  for (let i = 0; i < len; i++) {
    const num1 = parseInt(v1[i], 10)
    const num2 = parseInt(v2[i], 10)

    if (num1 > num2) {
      return 1
    } else if (num1 < num2) {
      return -1
    }
  }
  return 0
}
const systemInfo = uni.getSystemInfoSync()

function gte(version) {
  // 截止 2023-03-22 mac pc小程序不支持 canvas 2d
  let { SDKVersion, platform } = systemInfo
  // #ifdef MP-ALIPAY
  SDKVersion = my.SDKVersion
  // #endif
  // #ifdef MP-WEIXIN
  return platform !== 'mac' && compareVersion(SDKVersion, version) >= 0
  // #endif
  return compareVersion(SDKVersion, version) >= 0
}

export function canIUseCanvas2d() {
  // #ifdef MP-WEIXIN
  return gte('2.9.0')
  // #endif
  // #ifdef MP-ALIPAY
  return gte('2.7.0')
  // #endif
  // #ifdef MP-TOUTIAO
  return gte('1.78.0')
  // #endif
  return false
}

export function convertTouchesToArray(touches) {
  // 如果 touches 是一个数组，则直接返回它
  if (Array.isArray(touches)) {
    return touches
  }
  // 如果touches是一个对象，则转换为数组
  if (typeof touches === 'object' && touches !== null) {
    return Object.values(touches)
  }
  // 对于其他类型，直接返回它
  return touches
}

export function wrapTouch(event) {
  for (let i = 0; i < event.touches.length; ++i) {
    const touch = event.touches[i]
    touch.offsetX = touch.x
    touch.offsetY = touch.y
  }
  return event
}
export const devicePixelRatio = uni.getSystemInfoSync().pixelRatio
// #endif
// #ifdef APP-NVUE
export function base64ToPath(base64) {
  return new Promise((resolve, reject) => {
    const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(base64) || []
    const bitmap = new plus.nativeObj.Bitmap('bitmap' + Date.now())
    bitmap.loadBase64Data(
      base64,
      () => {
        if (!format) {
          reject(new Error('ERROR_BASE64SRC_PARSE'))
        }
        const time = new Date().getTime()
        const filePath = `_doc/uniapp_temp/${time}.${format}`

        bitmap.save(
          filePath,
          {},
          () => {
            bitmap.clear()
            resolve(filePath)
          },
          error => {
            bitmap.clear()
            console.error(`${JSON.stringify(error)}`)
            reject(error)
          }
        )
      },
      error => {
        bitmap.clear()
        console.error(`${JSON.stringify(error)}`)
        reject(error)
      }
    )
  })
}
// #endif

export function sleep(time) {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve(true)
    }, time)
  })
}

export function getRect(selector, options = {}) {
  const typeDefault = 'boundingClientRect'
  const { context, type = typeDefault } = options
  return new Promise((resolve, reject) => {
    const dom = uni.createSelectorQuery().in(context).select(selector)
    const result = rect => {
      if (rect) {
        resolve(rect)
      } else {
        reject()
      }
    }
    if (type == typeDefault) {
      dom[type](result).exec()
    } else {
      dom[type](
        {
          node: true,
          size: true,
          rect: true,
        },
        result
      ).exec()
    }
  })
}